package nettypro.netty.codec;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

/**
 * @ClassName NettyClientHandler
 * @Description TODO
 * @Author zeny
 * @Date 2020/3/23 0023 17:19
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    /**
     * @Description 通道就绪就会触发该方法
     * @Date 2020/3/23 0023 17:22
     * @param ctx
     * @return void
     **/
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        StudentPoJO.Student student = StudentPoJO.Student.newBuilder().setId(4).setName("豹子头林冲").build();
        ctx.writeAndFlush(student);
    }

    /**
     * @Description 通道有读取事件时触发
     * @Date 2020/3/23 0023 17:22
     * @param ctx
     * @param msg
     * @return void
     **/
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息: " + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址: " + ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        ctx.close();
    }
}
